HR users can define new days off that will not count to used days when creating new Vacation Document. Every new created holiday can be defined as one time only, or recurring (e.g. New Year's Eve that reoccur every year at the same date). In case of workdays - HR creates schemes of non working days of week, that can be assigned to different users.
Holidays management
Whilst While being logged as a member of HR group (Jira 's HR group userpicked at initialization), from Navigation Bar Menu go to Management (1) ➜ Holiday Schemes (2). To make changes, click on click "Edit" hyperlink (3)
...
Prompt should appear:
To add new holiday you must can also click on desired day on in calendar and then fill up its name, Next, choose holiday type: One time - for selected year only, Yearly - for all years in selected day. Be advised - this can be done whilst being in edition mode of particular holiday scheme.
After filling in all necessary options and deciding if the event should reoccur every year, you can press "Add" button to place it in the calendar of a particular holiday scheme (1):
...
You can choose what days of week will be marked as workdays. Every unticked day will be treated as a bank holiday and thus not taken out from user's total (e.g. yearly annual leave) quota.
After any changes made, you need to click Update workdays button to apply them in your system. By default, every any day of week is set as workday (except Saturday and Sunday) is set as a working day.
...
Next Vacation Manager HR Management - Managing Vacation Definitions